问是否使用windows的VBScript刷新Windows TaskBar？

EN

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' Progam Name: CheckConnection.vbs
' Program Purpose: This script check for an internec connection, the program pings to some domains,
'       wait some seconds (5 seconds) before the next try, if a domain is found, reset all counters,
'       and wait secondsBeforeNextCheck seconds before next check
'       If the programs raise nMaxRetriesBeforeStartProgram then kill the program that
'       manage the connection and start it again.
' Usage: This Script must be placed in ONE OF THE FOLLOWING PATHS
'   1) Start --> All Programs --> Start Up
'   2) HKLM\Software\Microsoft\Windows\CurrentVersion\Run
'   3)HKCU\Software\Microsoft\Windows\CurrentVersion\Run
'   4) Or you can create a task through:
'       Start --> All Programs --> Accessories-->System Tools --> Scheduled Tasks--> Add Scheduled Task
'       --> Follow the Wizard'
'   5) The program VZAccess Manager.exe must be configured to autoconnect through
'       Tools --> Preferences --> WWan --> Connect Options --> Automatically Connect (this must be checked)
'   6) Also to autorefresh the ip the vzaccess manager.exe must be configured with an script when c onnect.
' Author: Benito Lopez
' Date:  06152009
' Revision 1.1 : (11272009) -f was added to force the program VZAccess manager.exe to terminate.
' *****************************************************************************************
Dim WshShell
Set WshShell = WScript.CreateObject("WScript.Shell")
Dim objfso, objfile
Set objfso = CreateObject("Scripting.FileSystemObject")
Dim secondsBeforeNextCheck
Dim strDomains(6)
Dim nMaxRetriesBeforeStartProgram
Dim nCounterRetries

Const ForReading=1, ForWriting=2, ForAppending=8

strDomains (0) = "www.google.com"
strDomains (1) = "www.yahoo.com"
strDomains (2) = "www.chilpak.com"
strDomains (3) = "www.microsoft.com"
strDomains (4) = "www.flutec.com"
strDomains (5) = "www.flutec.com.mx"

strLogFilename = "c:\checkconnectionlog.log"
filepinger = "c:\pingresult.log"
nMaxRetriesBeforeStartProgram =5
secondsBeforeNextCheck = 60000
secondsBeforeNextTry = 15000
secondsBeforeAppStart = 2000
secondsAfterAppStart = 60000

Call Main()

Sub Main()
    set objfile = objfso.OpenTextFile(strLogFilename, 8,True)

    WHILE 1
        nCounterRetries = 0
        FOR i = 0 TO 5 STEP 1
            'Check the connection status if zero, means
            'There is no internet connection or the domain is down
            If not IsThereInternetConnection(strDomains(i)) THEN
                'Let suppose the domain is down, so we must try with the next domain
                nCounterRetries = nCounterRetries + 1
                IF nCounterRetries >= nMaxRetriesBeforeStartProgram THEN
                    'Close the program
                    targetprogram = "taskkill /im " & chr(34)  & "VZAccess Manager.exe" & chr(34) & " /f"
                    WshShell.Exec(targetprogram)
                    'Wait Applications Events 2 seconds
                    Wscript.Sleep(secondsBeforeAppStart)
                    'Start the program
                    targetprogram = chr(34) & "C:\Program Files\Verizon Wireless\VZAccess Manager\VZAccess Manager.exe" & chr(34) & " -m"
                    WshShell.Exec(targetprogram)
                    'Wait for the applications loads completely 1 seconds
                    WScript.Sleep(secondsAfterAppStart)
                    'Reset the counters
                    nCounterRetries = 0
                    Wscript.Sleep secondsBeforeNextCheck
                END IF
                'But we must wait some seconds before the next try
                Wscript.Sleep secondsBeforeNextTry

            ELSE
                'If we get a reply from the current domain,
                'Everything is OK,  The only we need to do is Wait until the next time to check
                'Reset Counter
                nCounterRetries = 0
                WScript.Sleep secondsBeforeNextCheck
            END IF
        NEXT
    Wend
End Sub

FUNCTION IsThereInternetConnection(strDomain)
on error resume next
    'Create some cons values
    'Make the ping
    Dim strRun
    strRun = "%comspec% /c ping -n 1 " & strDomain & " > " & filepinger
    Dim objwss
    Set objwss = CreateObject("WScript.Shell")
    'Hide the windows and wait the app to terminate
    WriteLog "Pinging " & strDomain & " ..."
    objwss.Run strRun,0,True
    Set objwss = Nothing

    ''Read the ping
    Dim strotf
    Dim fso
    Dim otf
    strotf=""
    set fso = CreateObject("Scripting.FileSystemObject")
    set otf = fso.OpenTextFile(filepinger,ForReading)
    strotf = otf.ReadAll
    fso.DeleteFile filepinger
    set fso = nothing
    set otf = nothing

    'Test the ping
    IF InStr(strotf,"Reply from")>0 THEN
        IsThereInternetConnection = TRUE
    ELSE
        IsThereInternetConnection = FALSE
    END IF
    WriteLog "Pinging Result " & IsThereInternetConnection & " Done."
End FUNCTION

Sub WriteLog(strLog)

    on error resume next

    Set objfile = objfso.GetFolder(strLogFilename)
    if objfile.size  > 50000 then
        objfso.Close
        objfso.DeleteFile strLogFilename
        set objfile = objfso.OpenTextFile(strLogFilename, 8,True)
    end if
    'Add some useful information
    strData = Now() & " - "
    objfile.WriteLine strData & strLog
End Sub